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Henriksson, P.J.G., M. Troell, A. Rico. 2015. Antimicrobial use in aquaculture: Some complementing facts. Proceedings of the National Academy of Sciences USA 112: E3317
In their article “Global trends in antimicrobial use in food animals” (1), Van Boeckel et al. provide important insights into antimicrobial use in terrestrial animal production. Although aquaculture was deliberately excluded from their study, some extreme facts on antimicrobial use in aquaculture were mentioned. Here we briefly complement their study with more up-to-date information about the present use and trends of antimicr...
Crona, B.I., T.M. Daw, W. Swartz, A.V. Norström, M. Nyström, M. Thyresson, C. Folke, J. Hentati-Sundberg, H. Österblom, L. Deutsch, M. Troell. 2015. Masked, diluted and drowned out: How global seafood trade weakens signals from marine ecosystems. Fish and Fisheries DOI: 10.1111/faf.12109
Nearly 40% of seafood is traded internationally and an even bigger proportion is affected by international trade, yet scholarship on marine fisheries has focused on global trends in stocks and catches, or on dynamics of individual fisheries, with limited attention to the link between individual fisheries, global trade and distant consumers. This paper examines the usefulness of fish price as a feedback signal to consumers a...
Crona, B.I., X. Basurto, D. Squires, S. Gelcich, T.M. Daw, A. Khan, E. Havice, V. Chomo, M. Troell, E.A. Buchary, E.H. Allison. Towards a typology of interactions between small-scale fisheries and global seafood trade. Marine Policy doi:10.1016/j.marpol.2015.11.016
Fish and fish-related products are among the most highly traded commodities globally and the proportion of globally harvested fish that is internationally traded has steadily risen over time. Views on the benefits of international seafood trade diverge, partly as a result from adopting either an aggregate national focus or a focus on local market actors. However, both views generally assume that the trade in question is cha...
Béné, C., R. Arthur, H. Norbury, E.H. Allison, M. Beveridge, S. Bush, L. Campling, W. Leschen, D. Little, D. Squires, S.H. Thilsted, M. Troell, M. Williams. Contribution of fisheries and aquaculture to food security and poverty reduction: Assessing the current evidence. World Development doi:10.1016/j.worlddev.2015.11.007
Following a precise evaluation protocol that was applied to a pool of 202 articles published between 2003 and 2014, this paper evaluates the existing evidence of how and to what extent capture fisheries and aquaculture contribute to improving nutrition, food security, and economic growth in developing and emergent countries. In doing so we evaluate the quality and scientific rigor of that evidence, identify the key conclusions...
Österblom, H., J.-B. Jouffray, C. Folke, B. Crona, M. Troell, A. Merrie, J. Rockström. 2015. Transnational corporations as ‘keystone actors’ in marine ecosystems. PLoS ONE 10(5): e0127533.
Keystone species have a disproportionate influence on the structure and function of ecosystems. Here we analyze whether a keystone-like pattern can be observed in the relationship between transnational corporations and marine ecosystems globally. We show how thirteen corporations control 11-16% of the global marine catch (9-13 million tons) and 19-40% of the largest and most valuable stocks, including species that play importa...
Moksnes, P.-O., D.O. Mirera, E. Björkvik, M.I. Hamad, H.M. Mahudi, D. Nyqvist, N. Jiddawi, M. Troell. 2015. Stepwise function of natural growth for Scylla serrata in East Africa: A valuable tool for assessing growth of mud crabs in aquaculture. Aquaculture Research 46: 2938–2953.
Predicting growth is critical in aquaculture, but models of growth are largely missing for mud crab species. Here, we present the first model of natural growth in juvenile and adult mud crabs Scylla serrata from East Africa using a stepwise growth function based on data on intermoult periods and growth at moult from field mark-recapture, pond and laboratory studies. The results showed a sigmoid growth pattern in carapace wid...
Krause, G., C. Brugere, A. Diedrich, M.W. Ebeling, S.C.A. Ferse, E. Mikkelsen, J.A. Pérez Agúndez, S.M. Stead, N. Stybel, M. Troell. 2015. A revolution without people? Closing the people-policy gap in aquaculture development. Aquaculture 447: 44–55.
Failure of the blue revolution is a global risk. The international problem is that there is a gap in knowledge exchange between the aquaculture industry, policy makers trying to support aquaculture development and people who depend on aquaculture for a job and/or food source. Thus, governments and international organizations promoting aquaculture as the solution to improving food security, nutrition and income are failing to o...
Homer-Dixon, T., B. Walker, R. Biggs, A.-S. Crépin, C. Folke, E.F. Lambin, G.D. Peterson, J. Rockström, M. Scheffer, W. Steffen, M. Troell. 2015. Synchronous failure: The emerging causal architecture of global crisis. Ecology and Society 20(3): 6
Recent global crises reveal an emerging pattern of causation that could increasingly characterize the birth and progress of future global crises. A conceptual framework identifies this pattern’s deep causes, intermediate processes, and ultimate outcomes. The framework shows how multiple stresses can interact within a single social-ecological system to cause a shift in that system’s behavior, how simultaneous shifts of this kin...
Eriksson, H., H. Österblom, B. Crona, M. Troell, N. Andrew, J. Wilen, C. Folke. 2015. Contagious exploitation of marine resources. Frontiers in Ecology and the Environment 13: 435–440
Global seafood sourcing networks are expanding to meet demand. To describe contemporary fishery expansion patterns, we analyzed the worldwide exploitation of sea cucumber (Echinodermata: Holothuroidea) traded via Hong Kong for consumers in China. In just 15 years (1996–2011), the sea cucumber sourcing network expanded from 35 to 83 countries; sea cucumber fisheries serving the Chinese market now operate within countries cumu...
Da, C.T., L.H. Phuoc, H.N. Duc, M. Troell, H. Berg. 2015. Use of wastewater from striped catfish (Pangasianodon hypophthalmus) pond culture for integrated rice–fish–vegetable farming systems in the Mekong Delta, Vietnam. Agroecology and Sustainable Food Systems 39: 580–597
This article investigates the feasibility of reusing wastewater from striped catfish ( Pangasianodon hypophthalmus ) pond culture as nutrient input for integrated rice–Nile tilapia–green bean farming systems, and to what extent this could contribute to decreasing the environmental impacts on water quality from the striped catfish industry in the Mekong Delta. Four treatments in triplicates were used to investigate the growt...
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